US2687944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of water-soluble textile and other materials
Assignee: Acordis UK Ltd
•
Filing: 1950-02-09
•
Granted: 1954-08-31
•
Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Johnson Edgar Bert
- 👤 Webster John Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:34
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/24; D01F2/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE FILAMENTS AND FILMS, WHICH COMPRISES EXTRUDING A SPINNING SOLUTION OF A WATER-SOLUBLE CELLULOSE ETHER IN AQUEOUS ACETIC ACID OF CONCENTRATION 60 TO 80% BY VOLUME INTO A COAGULATING BATH CONSISTING ESSENTIALLY OF AT LEAST ONE ORGANIC LIQUID SELECTED FROM THE GROUP WHICH CONSISTS OF ALIPHATIC KETONES CONTAINING AT MOST 5 CARBON ATOMS IN THE MOLECULE, NORMALLY LIQUID ALIPHATIC ALCOHOLS CONTAINING TO 10 CARBON ATOMS IN THE MOLECULE, AND NORMALLY LIQUID HYDROXY-ETHERS.
Claim 2
Dependent Claim
77 words
PROCESS FOR THE PRODUCTION OF WATER-SOLUBLE FILAMENTS AND FILMS, WHICH COMPRISES EXTRUDING A SPINNING SOLUTION OF A WATER-SOLUBLE CELLULOSE ETHER IN AQUEOUS ACETIC ACID OF CONCENTRATION 60 TO 80% BY VOLUME INTO A COAGULATING BATH CONSISTING ESSENTIALLY OF AT LEAST ONE ORGANIC LIQUID SELECTED FROM THE GROUP WHICH CONSISTS OF ALIPHATIC KETONES CONTAINING AT MOST 5 CARBON ATOMS IN THE MOLECULE, NORMALLY LIQUID ALIPHATIC ALCOHOLS CONTAINING TO 10 CARBON ATOMS IN THE MOLECULE, AND NORMALLY LIQUID HYDROXY-ETHERS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |